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gecko/toolkit/crashreporter/nsExceptionHandler.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsExceptionHandler.h"
#include "nsDataHashtable.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/dom/CrashReporterChild.h"
#include "mozilla/Services.h"
#include "nsIObserverService.h"
#include "mozilla/unused.h"
#include "nsThreadUtils.h"
#include "nsXULAppAPI.h"
#if defined(XP_WIN32)
#ifdef WIN32_LEAN_AND_MEAN
#undef WIN32_LEAN_AND_MEAN
#endif
#include "nsXULAppAPI.h"
#include "nsIXULAppInfo.h"
#include "nsIWindowsRegKey.h"
#include "client/windows/crash_generation/client_info.h"
#include "client/windows/crash_generation/crash_generation_server.h"
#include "client/windows/handler/exception_handler.h"
#include <dbghelp.h>
#include <string.h>
#include "nsDirectoryServiceUtils.h"
#include "nsWindowsDllInterceptor.h"
#elif defined(XP_MACOSX)
#include "client/mac/crash_generation/client_info.h"
#include "client/mac/crash_generation/crash_generation_server.h"
#include "client/mac/handler/exception_handler.h"
#include <string>
#include <Carbon/Carbon.h>
#include <CoreFoundation/CoreFoundation.h>
#include <crt_externs.h>
#include <fcntl.h>
#include <mach/mach.h>
#include <sys/types.h>
#include <spawn.h>
#include <unistd.h>
#include "mac_utils.h"
#elif defined(XP_LINUX)
#include "nsIINIParser.h"
#include "common/linux/linux_libc_support.h"
#include "third_party/lss/linux_syscall_support.h"
#include "client/linux/crash_generation/client_info.h"
#include "client/linux/crash_generation/crash_generation_server.h"
#include "client/linux/handler/exception_handler.h"
#include <fcntl.h>
#include <sys/types.h>
#include <unistd.h>
#elif defined(XP_SOLARIS)
#include "client/solaris/handler/exception_handler.h"
#include <fcntl.h>
#include <sys/types.h>
#include <unistd.h>
#else
#error "Not yet implemented for this platform"
#endif // defined(XP_WIN32)
#ifdef MOZ_CRASHREPORTER_INJECTOR
#include "InjectCrashReporter.h"
using mozilla::InjectCrashRunnable;
#endif
#include <stdlib.h>
#include <time.h>
#include <prenv.h>
#include <prio.h>
#include <prmem.h>
#include "mozilla/Mutex.h"
#include "nsDebug.h"
#include "nsCRT.h"
#include "nsIFile.h"
#include "prprf.h"
#include <map>
#include <vector>
#include "mozilla/mozalloc_oom.h"
#include "mozilla/LateWriteChecks.h"
#include "mozilla/WindowsDllBlocklist.h"
#if defined(XP_MACOSX)
CFStringRef reporterClientAppID = CFSTR("org.mozilla.crashreporter");
#endif
#if defined(MOZ_WIDGET_ANDROID)
#include "common/linux/file_id.h"
#endif
using google_breakpad::CrashGenerationServer;
using google_breakpad::ClientInfo;
#ifdef XP_LINUX
using google_breakpad::MinidumpDescriptor;
#endif
using namespace mozilla;
using mozilla::dom::CrashReporterChild;
using mozilla::dom::PCrashReporterChild;
namespace CrashReporter {
#ifdef XP_WIN32
typedef wchar_t XP_CHAR;
typedef std::wstring xpstring;
#define CONVERT_XP_CHAR_TO_UTF16(x) x
#define XP_STRLEN(x) wcslen(x)
#define my_strlen strlen
#define CRASH_REPORTER_FILENAME "crashreporter.exe"
#define PATH_SEPARATOR "\\"
#define XP_PATH_SEPARATOR L"\\"
// sort of arbitrary, but MAX_PATH is kinda small
#define XP_PATH_MAX 4096
// "<reporter path>" "<minidump path>"
#define CMDLINE_SIZE ((XP_PATH_MAX * 2) + 6)
#ifdef _USE_32BIT_TIME_T
#define XP_TTOA(time, buffer, base) ltoa(time, buffer, base)
#else
#define XP_TTOA(time, buffer, base) _i64toa(time, buffer, base)
#endif
#define XP_STOA(size, buffer, base) _ui64toa(size, buffer, base)
#else
typedef char XP_CHAR;
typedef std::string xpstring;
#define CONVERT_XP_CHAR_TO_UTF16(x) NS_ConvertUTF8toUTF16(x)
#define CRASH_REPORTER_FILENAME "crashreporter"
#define PATH_SEPARATOR "/"
#define XP_PATH_SEPARATOR "/"
#define XP_PATH_MAX PATH_MAX
#ifdef XP_LINUX
#define XP_STRLEN(x) my_strlen(x)
#define XP_TTOA(time, buffer, base) my_inttostring(time, buffer, sizeof(buffer))
#define XP_STOA(size, buffer, base) my_inttostring(size, buffer, sizeof(buffer))
#else
#define XP_STRLEN(x) strlen(x)
#define XP_TTOA(time, buffer, base) sprintf(buffer, "%ld", time)
#define XP_STOA(size, buffer, base) sprintf(buffer, "%zu", size)
#define my_strlen strlen
#define sys_close close
#define sys_fork fork
#define sys_open open
#define sys_write write
#endif
#endif // XP_WIN32
static const XP_CHAR dumpFileExtension[] = {'.', 'd', 'm', 'p',
'\0'}; // .dmp
static const XP_CHAR extraFileExtension[] = {'.', 'e', 'x', 't',
'r', 'a', '\0'}; // .extra
static google_breakpad::ExceptionHandler* gExceptionHandler = nullptr;
static XP_CHAR* pendingDirectory;
static XP_CHAR* crashReporterPath;
// If this is false, we don't launch the crash reporter
static bool doReport = true;
// If this is true, we don't have a crash reporter
static bool headlessClient = false;
// if this is true, we pass the exception on to the OS crash reporter
static bool showOSCrashReporter = false;
// The time of the last recorded crash, as a time_t value.
static time_t lastCrashTime = 0;
// The pathname of a file to store the crash time in
static XP_CHAR lastCrashTimeFilename[XP_PATH_MAX] = {0};
// A marker file to hold the path to the last dump written, which
// will be checked on startup.
static XP_CHAR crashMarkerFilename[XP_PATH_MAX] = {0};
// Whether we've already looked for the marker file.
static bool lastRunCrashID_checked = false;
// The minidump ID contained in the marker file.
static nsString* lastRunCrashID = nullptr;
#if defined(MOZ_WIDGET_ANDROID)
// on Android 4.2 and above there is a user serial number associated
// with the current process that gets lost when we fork so we need to
// explicitly pass it to am
static char* androidUserSerial = nullptr;
#endif
// these are just here for readability
static const char kCrashTimeParameter[] = "CrashTime=";
static const int kCrashTimeParameterLen = sizeof(kCrashTimeParameter)-1;
static const char kTimeSinceLastCrashParameter[] = "SecondsSinceLastCrash=";
static const int kTimeSinceLastCrashParameterLen =
sizeof(kTimeSinceLastCrashParameter)-1;
static const char kSysMemoryParameter[] = "SystemMemoryUsePercentage=";
static const int kSysMemoryParameterLen = sizeof(kSysMemoryParameter)-1;
static const char kTotalVirtualMemoryParameter[] = "TotalVirtualMemory=";
static const int kTotalVirtualMemoryParameterLen =
sizeof(kTotalVirtualMemoryParameter)-1;
static const char kAvailableVirtualMemoryParameter[] = "AvailableVirtualMemory=";
static const int kAvailableVirtualMemoryParameterLen =
sizeof(kAvailableVirtualMemoryParameter)-1;
static const char kOOMAllocationSizeParameter[] = "OOMAllocationSize=";
static const int kOOMAllocationSizeParameterLen =
sizeof(kOOMAllocationSizeParameter)-1;
static const char kAvailablePageFileParameter[] = "AvailablePageFile=";
static const int kAvailablePageFileParameterLen =
sizeof(kAvailablePageFileParameter)-1;
static const char kAvailablePhysicalMemoryParameter[] = "AvailablePhysicalMemory=";
static const int kAvailablePhysicalMemoryParameterLen =
sizeof(kAvailablePhysicalMemoryParameter)-1;
static const char kIsGarbageCollectingParameter[] = "IsGarbageCollecting=";
static const int kIsGarbageCollectingParameterLen =
sizeof(kIsGarbageCollectingParameter)-1;
#ifdef XP_WIN
static const char kBreakpadReserveAddressParameter[] = "BreakpadReserveAddress=";
static const int kBreakpadReserveAddressParameterLen =
sizeof(kBreakpadReserveAddressParameter)-1;
static const char kBreakpadReserveSizeParameter[] = "BreakpadReserveSize=";
static const int kBreakpadReserveSizeParameterLen =
sizeof(kBreakpadReserveSizeParameter)-1;
#endif
// this holds additional data sent via the API
static Mutex* crashReporterAPILock;
static Mutex* notesFieldLock;
static AnnotationTable* crashReporterAPIData_Hash;
static nsCString* crashReporterAPIData = nullptr;
static nsCString* notesField = nullptr;
static bool isGarbageCollecting;
// OOP crash reporting
static CrashGenerationServer* crashServer; // chrome process has this
# if defined(XP_WIN) || defined(XP_MACOSX)
// If crash reporting is disabled, we hand out this "null" pipe to the
// child process and don't attempt to connect to a parent server.
static const char kNullNotifyPipe[] = "-";
static char* childCrashNotifyPipe;
# elif defined(XP_LINUX)
static int serverSocketFd = -1;
static int clientSocketFd = -1;
static const int kMagicChildCrashReportFd = 4;
# endif
// |dumpMapLock| must protect all access to |pidToMinidump|.
static Mutex* dumpMapLock;
struct ChildProcessData : public nsUint32HashKey
{
ChildProcessData(KeyTypePointer aKey)
: nsUint32HashKey(aKey)
, sequence(0)
#ifdef MOZ_CRASHREPORTER_INJECTOR
, callback(nullptr)
#endif
{ }
nsCOMPtr<nsIFile> minidump;
// Each crashing process is assigned an increasing sequence number to
// indicate which process crashed first.
uint32_t sequence;
#ifdef MOZ_CRASHREPORTER_INJECTOR
InjectorCrashCallback* callback;
#endif
};
typedef nsTHashtable<ChildProcessData> ChildMinidumpMap;
static ChildMinidumpMap* pidToMinidump;
static uint32_t crashSequence;
static bool OOPInitialized();
#ifdef MOZ_CRASHREPORTER_INJECTOR
static nsIThread* sInjectorThread;
class ReportInjectedCrash : public nsRunnable
{
public:
ReportInjectedCrash(uint32_t pid) : mPID(pid) { }
NS_IMETHOD Run();
private:
uint32_t mPID;
};
#endif // MOZ_CRASHREPORTER_INJECTOR
// Crashreporter annotations that we don't send along in subprocess
// reports
static const char* kSubprocessBlacklist[] = {
"FramePoisonBase",
"FramePoisonSize",
"StartupTime",
"URL"
};
// If annotations are attempted before the crash reporter is enabled,
// they queue up here.
class DelayedNote;
nsTArray<nsAutoPtr<DelayedNote> >* gDelayedAnnotations;
#if defined(XP_WIN)
// the following are used to prevent other DLLs reverting the last chance
// exception handler to the windows default. Any attempt to change the
// unhandled exception filter or to reset it is ignored and our crash
// reporter is loaded instead (in case it became unloaded somehow)
typedef LPTOP_LEVEL_EXCEPTION_FILTER (WINAPI *SetUnhandledExceptionFilter_func)
(LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter);
static SetUnhandledExceptionFilter_func stub_SetUnhandledExceptionFilter = 0;
static WindowsDllInterceptor gKernel32Intercept;
static bool gBlockUnhandledExceptionFilter = true;
static LPTOP_LEVEL_EXCEPTION_FILTER WINAPI
patched_SetUnhandledExceptionFilter (LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter)
{
if (!gBlockUnhandledExceptionFilter) {
// don't intercept
return stub_SetUnhandledExceptionFilter(lpTopLevelExceptionFilter);
}
// intercept attempts to change the filter
return nullptr;
}
/**
* Reserve some VM space. In the event that we crash because VM space is
* being leaked without leaking memory, freeing this space before taking
* the minidump will allow us to collect a minidump.
*
* This size is bigger than xul.dll plus some extra for MinidumpWriteDump
* allocations.
*/
static const SIZE_T kReserveSize = 0x2400000; // 36 MB
static void* gBreakpadReservedVM;
#endif
#ifdef XP_MACOSX
static cpu_type_t pref_cpu_types[2] = {
#if defined(__i386__)
CPU_TYPE_X86,
#elif defined(__x86_64__)
CPU_TYPE_X86_64,
#elif defined(__ppc__)
CPU_TYPE_POWERPC,
#endif
CPU_TYPE_ANY };
static posix_spawnattr_t spawnattr;
#endif
#if defined(MOZ_WIDGET_ANDROID)
// Android builds use a custom library loader,
// so the embedding will provide a list of shared
// libraries that are mapped into anonymous mappings.
typedef struct {
std::string name;
uintptr_t start_address;
size_t length;
size_t file_offset;
} mapping_info;
static std::vector<mapping_info> library_mappings;
typedef std::map<uint32_t,google_breakpad::MappingList> MappingMap;
#endif
#ifdef XP_LINUX
inline void
my_inttostring(intmax_t t, char* buffer, size_t buffer_length)
{
my_memset(buffer, 0, buffer_length);
my_uitos(buffer, t, my_uint_len(t));
}
#endif
#ifdef XP_WIN
static void
CreateFileFromPath(const xpstring& path, nsIFile** file)
{
NS_NewLocalFile(nsDependentString(path.c_str()), false, file);
}
#else
static void
CreateFileFromPath(const xpstring& path, nsIFile** file)
{
NS_NewNativeLocalFile(nsDependentCString(path.c_str()), false, file);
}
#endif
static XP_CHAR*
Concat(XP_CHAR* str, const XP_CHAR* toAppend, int* size)
{
int appendLen = XP_STRLEN(toAppend);
if (appendLen >= *size) appendLen = *size - 1;
memcpy(str, toAppend, appendLen * sizeof(XP_CHAR));
str += appendLen;
*str = '\0';
*size -= appendLen;
return str;
}
static size_t gOOMAllocationSize = 0;
void AnnotateOOMAllocationSize(size_t size)
{
gOOMAllocationSize = size;
}
bool MinidumpCallback(
#ifdef XP_LINUX
const MinidumpDescriptor& descriptor,
#else
const XP_CHAR* dump_path,
const XP_CHAR* minidump_id,
#endif
void* context,
#ifdef XP_WIN32
EXCEPTION_POINTERS* exinfo,
MDRawAssertionInfo* assertion,
#endif
bool succeeded)
{
bool returnValue = showOSCrashReporter ? false : succeeded;
static XP_CHAR minidumpPath[XP_PATH_MAX];
int size = XP_PATH_MAX;
XP_CHAR* p;
#ifndef XP_LINUX
p = Concat(minidumpPath, dump_path, &size);
p = Concat(p, XP_PATH_SEPARATOR, &size);
p = Concat(p, minidump_id, &size);
Concat(p, dumpFileExtension, &size);
#else
Concat(minidumpPath, descriptor.path(), &size);
#endif
static XP_CHAR extraDataPath[XP_PATH_MAX];
size = XP_PATH_MAX;
#ifndef XP_LINUX
p = Concat(extraDataPath, dump_path, &size);
p = Concat(p, XP_PATH_SEPARATOR, &size);
p = Concat(p, minidump_id, &size);
#else
p = Concat(extraDataPath, descriptor.path(), &size);
// Skip back past the .dmp extension.
p -= 4;
#endif
Concat(p, extraFileExtension, &size);
if (headlessClient) {
// Leave a marker indicating that there was a crash.
#if defined(XP_WIN32)
HANDLE hFile = CreateFile(crashMarkerFilename, GENERIC_WRITE, 0,
nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL,
nullptr);
if(hFile != INVALID_HANDLE_VALUE) {
DWORD nBytes;
WriteFile(hFile, minidumpPath, 2*wcslen(minidumpPath), &nBytes, nullptr);
CloseHandle(hFile);
}
#elif defined(XP_UNIX)
int fd = sys_open(crashMarkerFilename,
O_WRONLY | O_CREAT | O_TRUNC,
0600);
if (fd != -1) {
unused << sys_write(fd, minidumpPath, my_strlen(minidumpPath));
sys_close(fd);
}
#endif
}
char oomAllocationSizeBuffer[32];
int oomAllocationSizeBufferLen = 0;
if (gOOMAllocationSize) {
XP_STOA(gOOMAllocationSize, oomAllocationSizeBuffer, 10);
oomAllocationSizeBufferLen = my_strlen(oomAllocationSizeBuffer);
}
// calculate time since last crash (if possible), and store
// the time of this crash.
time_t crashTime;
#ifdef XP_LINUX
struct kernel_timeval tv;
sys_gettimeofday(&tv, nullptr);
crashTime = tv.tv_sec;
#else
crashTime = time(nullptr);
#endif
time_t timeSinceLastCrash = 0;
// stringified versions of the above
char crashTimeString[32];
int crashTimeStringLen = 0;
char timeSinceLastCrashString[32];
int timeSinceLastCrashStringLen = 0;
XP_TTOA(crashTime, crashTimeString, 10);
crashTimeStringLen = my_strlen(crashTimeString);
if (lastCrashTime != 0) {
timeSinceLastCrash = crashTime - lastCrashTime;
XP_TTOA(timeSinceLastCrash, timeSinceLastCrashString, 10);
timeSinceLastCrashStringLen = my_strlen(timeSinceLastCrashString);
}
// write crash time to file
if (lastCrashTimeFilename[0] != 0) {
#if defined(XP_WIN32)
HANDLE hFile = CreateFile(lastCrashTimeFilename, GENERIC_WRITE, 0,
nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL,
nullptr);
if(hFile != INVALID_HANDLE_VALUE) {
DWORD nBytes;
WriteFile(hFile, crashTimeString, crashTimeStringLen, &nBytes, nullptr);
CloseHandle(hFile);
}
#elif defined(XP_UNIX)
int fd = sys_open(lastCrashTimeFilename,
O_WRONLY | O_CREAT | O_TRUNC,
0600);
if (fd != -1) {
unused << sys_write(fd, crashTimeString, crashTimeStringLen);
sys_close(fd);
}
#endif
}
#if defined(XP_WIN32)
if (!crashReporterAPIData->IsEmpty()) {
// write out API data
HANDLE hFile = CreateFile(extraDataPath, GENERIC_WRITE, 0,
nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL,
nullptr);
if(hFile != INVALID_HANDLE_VALUE) {
DWORD nBytes;
WriteFile(hFile, crashReporterAPIData->get(),
crashReporterAPIData->Length(), &nBytes, nullptr);
WriteFile(hFile, kCrashTimeParameter, kCrashTimeParameterLen,
&nBytes, nullptr);
WriteFile(hFile, crashTimeString, crashTimeStringLen, &nBytes, nullptr);
WriteFile(hFile, "\n", 1, &nBytes, nullptr);
if (timeSinceLastCrash != 0) {
WriteFile(hFile, kTimeSinceLastCrashParameter,
kTimeSinceLastCrashParameterLen, &nBytes, nullptr);
WriteFile(hFile, timeSinceLastCrashString, timeSinceLastCrashStringLen,
&nBytes, nullptr);
WriteFile(hFile, "\n", 1, &nBytes, nullptr);
}
if (isGarbageCollecting) {
WriteFile(hFile, kIsGarbageCollectingParameter, kIsGarbageCollectingParameterLen,
&nBytes, nullptr);
WriteFile(hFile, isGarbageCollecting ? "1" : "0", 1, &nBytes, nullptr);
WriteFile(hFile, "\n", 1, &nBytes, nullptr);
}
char buffer[128];
int bufferLen;
if (gBreakpadReservedVM) {
WriteFile(hFile, kBreakpadReserveAddressParameter, kBreakpadReserveAddressParameterLen, &nBytes, nullptr);
_ui64toa(uintptr_t(gBreakpadReservedVM), buffer, 10);
WriteFile(hFile, buffer, strlen(buffer), &nBytes, nullptr);
WriteFile(hFile, "\n", 1, &nBytes, nullptr);
WriteFile(hFile, kBreakpadReserveSizeParameter, kBreakpadReserveSizeParameterLen, &nBytes, nullptr);
_ui64toa(kReserveSize, buffer, 10);
WriteFile(hFile, buffer, strlen(buffer), &nBytes, nullptr);
WriteFile(hFile, "\n", 1, &nBytes, nullptr);
}
#ifdef HAS_DLL_BLOCKLIST
DllBlocklist_WriteNotes(hFile);
#endif
// Try to get some information about memory.
MEMORYSTATUSEX statex;
statex.dwLength = sizeof(statex);
if (GlobalMemoryStatusEx(&statex)) {
#define WRITE_STATEX_FIELD(field, paramName, conversionFunc) \
WriteFile(hFile, k##paramName##Parameter, \
k##paramName##ParameterLen, &nBytes, nullptr); \
conversionFunc(statex.field, buffer, 10); \
bufferLen = strlen(buffer); \
WriteFile(hFile, buffer, bufferLen, &nBytes, nullptr); \
WriteFile(hFile, "\n", 1, &nBytes, nullptr);
WRITE_STATEX_FIELD(dwMemoryLoad, SysMemory, ltoa);
WRITE_STATEX_FIELD(ullTotalVirtual, TotalVirtualMemory, _ui64toa);
WRITE_STATEX_FIELD(ullAvailVirtual, AvailableVirtualMemory, _ui64toa);
WRITE_STATEX_FIELD(ullAvailPageFile, AvailablePageFile, _ui64toa);
WRITE_STATEX_FIELD(ullAvailPhys, AvailablePhysicalMemory, _ui64toa);
#undef WRITE_STATEX_FIELD
}
if (oomAllocationSizeBufferLen) {
WriteFile(hFile, kOOMAllocationSizeParameter,
kOOMAllocationSizeParameterLen, &nBytes, nullptr);
WriteFile(hFile, oomAllocationSizeBuffer, oomAllocationSizeBufferLen,
&nBytes, nullptr);
WriteFile(hFile, "\n", 1, &nBytes, nullptr);
}
CloseHandle(hFile);
}
}
if (!doReport) {
return returnValue;
}
XP_CHAR cmdLine[CMDLINE_SIZE];
size = CMDLINE_SIZE;
p = Concat(cmdLine, L"\"", &size);
p = Concat(p, crashReporterPath, &size);
p = Concat(p, L"\" \"", &size);
p = Concat(p, minidumpPath, &size);
Concat(p, L"\"", &size);
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
si.dwFlags = STARTF_USESHOWWINDOW;
si.wShowWindow = SW_SHOWNORMAL;
ZeroMemory(&pi, sizeof(pi));
if (CreateProcess(nullptr, (LPWSTR)cmdLine, nullptr, nullptr, FALSE, 0,
nullptr, nullptr, &si, &pi)) {
CloseHandle( pi.hProcess );
CloseHandle( pi.hThread );
}
// we're not really in a position to do anything if the CreateProcess fails
TerminateProcess(GetCurrentProcess(), 1);
#elif defined(XP_UNIX)
if (!crashReporterAPIData->IsEmpty()) {
// write out API data
int fd = sys_open(extraDataPath,
O_WRONLY | O_CREAT | O_TRUNC,
0666);
if (fd != -1) {
// not much we can do in case of error
unused << sys_write(fd, crashReporterAPIData->get(),
crashReporterAPIData->Length());
unused << sys_write(fd, kCrashTimeParameter, kCrashTimeParameterLen);
unused << sys_write(fd, crashTimeString, crashTimeStringLen);
unused << sys_write(fd, "\n", 1);
if (timeSinceLastCrash != 0) {
unused << sys_write(fd, kTimeSinceLastCrashParameter,
kTimeSinceLastCrashParameterLen);
unused << sys_write(fd, timeSinceLastCrashString,
timeSinceLastCrashStringLen);
unused << sys_write(fd, "\n", 1);
}
if (isGarbageCollecting) {
unused << sys_write(fd, kIsGarbageCollectingParameter, kIsGarbageCollectingParameterLen);
unused << sys_write(fd, isGarbageCollecting ? "1" : "0", 1);
unused << sys_write(fd, "\n", 1);
}
if (oomAllocationSizeBufferLen) {
unused << sys_write(fd, kOOMAllocationSizeParameter,
kOOMAllocationSizeParameterLen);
unused << sys_write(fd, oomAllocationSizeBuffer,
oomAllocationSizeBufferLen);
unused << sys_write(fd, "\n", 1);
}
sys_close(fd);
}
}
if (!doReport) {
return returnValue;
}
#ifdef XP_MACOSX
char* const my_argv[] = {
crashReporterPath,
minidumpPath,
nullptr
};
char **env = nullptr;
char ***nsEnv = _NSGetEnviron();
if (nsEnv)
env = *nsEnv;
int result = posix_spawnp(nullptr,
my_argv[0],
nullptr,
&spawnattr,
my_argv,
env);
if (result != 0)
return false;
#else // !XP_MACOSX
pid_t pid = sys_fork();
if (pid == -1)
return false;
else if (pid == 0) {
#if !defined(MOZ_WIDGET_ANDROID)
// need to clobber this, as libcurl might load NSS,
// and we want it to load the system NSS.
unsetenv("LD_LIBRARY_PATH");
unused << execl(crashReporterPath,
crashReporterPath, minidumpPath, (char*)0);
#else
// Invoke the reportCrash activity using am
if (androidUserSerial) {
unused << execlp("/system/bin/am",
"/system/bin/am",
"start",
"--user", androidUserSerial,
"-a", "org.mozilla.gecko.reportCrash",
"-n", crashReporterPath,
"--es", "minidumpPath", minidumpPath,
(char*)0);
} else {
unused << execlp("/system/bin/am",
"/system/bin/am",
"start",
"-a", "org.mozilla.gecko.reportCrash",
"-n", crashReporterPath,
"--es", "minidumpPath", minidumpPath,
(char*)0);
}
#endif
_exit(1);
}
#endif // XP_MACOSX
#endif // XP_UNIX
return returnValue;
}
#ifdef XP_WIN
static void
ReserveBreakpadVM()
{
if (!gBreakpadReservedVM) {
gBreakpadReservedVM = VirtualAlloc(nullptr, kReserveSize, MEM_RESERVE,
PAGE_NOACCESS);
}
}
static void
FreeBreakpadVM()
{
if (gBreakpadReservedVM) {
VirtualFree(gBreakpadReservedVM, 0, MEM_RELEASE);
}
}
/**
* Filters out floating point exceptions which are handled by nsSigHandlers.cpp
* and should not be handled as crashes.
*
* Also calls FreeBreakpadVM if appropriate.
*/
static bool FPEFilter(void* context, EXCEPTION_POINTERS* exinfo,
MDRawAssertionInfo* assertion)
{
if (!exinfo) {
FreeBreakpadVM();
return true;
}
PEXCEPTION_RECORD e = (PEXCEPTION_RECORD)exinfo->ExceptionRecord;
switch (e->ExceptionCode) {
case STATUS_FLOAT_DENORMAL_OPERAND:
case STATUS_FLOAT_DIVIDE_BY_ZERO:
case STATUS_FLOAT_INEXACT_RESULT:
case STATUS_FLOAT_INVALID_OPERATION:
case STATUS_FLOAT_OVERFLOW:
case STATUS_FLOAT_STACK_CHECK:
case STATUS_FLOAT_UNDERFLOW:
case STATUS_FLOAT_MULTIPLE_FAULTS:
case STATUS_FLOAT_MULTIPLE_TRAPS:
return false; // Don't write minidump, continue exception search
}
FreeBreakpadVM();
return true;
}
#endif // XP_WIN
static bool ShouldReport()
{
// this environment variable prevents us from launching
// the crash reporter client
const char *envvar = PR_GetEnv("MOZ_CRASHREPORTER_NO_REPORT");
if (envvar && *envvar) {
return false;
}
envvar = PR_GetEnv("MOZ_CRASHREPORTER_FULLDUMP");
if (envvar && *envvar) {
return false;
}
return true;
}
namespace {
bool Filter(void* context) {
mozilla::StopLateWriteChecks();
return true;
}
}
nsresult SetExceptionHandler(nsIFile* aXREDirectory,
bool force/*=false*/)
{
if (gExceptionHandler)
return NS_ERROR_ALREADY_INITIALIZED;
#if !defined(DEBUG) || defined(MOZ_WIDGET_GONK)
// In non-debug builds, enable the crash reporter by default, and allow
// disabling it with the MOZ_CRASHREPORTER_DISABLE environment variable.
// Also enable it by default in debug gonk builds as it is difficult to
// set environment on startup.
const char *envvar = PR_GetEnv("MOZ_CRASHREPORTER_DISABLE");
if (envvar && *envvar && !force)
return NS_OK;
#else
// In debug builds, disable the crash reporter by default, and allow to
// enable it with the MOZ_CRASHREPORTER environment variable.
const char *envvar = PR_GetEnv("MOZ_CRASHREPORTER");
if ((!envvar || !*envvar) && !force)
return NS_OK;
#endif
#if defined(MOZ_WIDGET_GONK)
doReport = false;
headlessClient = true;
#elif defined(XP_WIN)
if (XRE_GetWindowsEnvironment() == WindowsEnvironmentType_Desktop) {
doReport = ShouldReport();
} else {
doReport = false;
headlessClient = true;
}
#else
// this environment variable prevents us from launching
// the crash reporter client
doReport = ShouldReport();
#endif
// allocate our strings
crashReporterAPIData = new nsCString();
NS_ENSURE_TRUE(crashReporterAPIData, NS_ERROR_OUT_OF_MEMORY);
NS_ASSERTION(!crashReporterAPILock, "Shouldn't have a lock yet");
crashReporterAPILock = new Mutex("crashReporterAPILock");
NS_ASSERTION(!notesFieldLock, "Shouldn't have a lock yet");
notesFieldLock = new Mutex("notesFieldLock");
crashReporterAPIData_Hash =
new nsDataHashtable<nsCStringHashKey,nsCString>();
NS_ENSURE_TRUE(crashReporterAPIData_Hash, NS_ERROR_OUT_OF_MEMORY);
notesField = new nsCString();
NS_ENSURE_TRUE(notesField, NS_ERROR_OUT_OF_MEMORY);
if (!headlessClient) {
// locate crashreporter executable
nsCOMPtr<nsIFile> exePath;
nsresult rv = aXREDirectory->Clone(getter_AddRefs(exePath));
NS_ENSURE_SUCCESS(rv, rv);
#if defined(XP_MACOSX)
exePath->Append(NS_LITERAL_STRING("crashreporter.app"));
exePath->Append(NS_LITERAL_STRING("Contents"));
exePath->Append(NS_LITERAL_STRING("MacOS"));
#endif
exePath->AppendNative(NS_LITERAL_CSTRING(CRASH_REPORTER_FILENAME));
#ifdef XP_WIN32
nsString crashReporterPath_temp;
exePath->GetPath(crashReporterPath_temp);
crashReporterPath = reinterpret_cast<wchar_t*>(ToNewUnicode(crashReporterPath_temp));
#elif !defined(__ANDROID__)
nsCString crashReporterPath_temp;
exePath->GetNativePath(crashReporterPath_temp);
crashReporterPath = ToNewCString(crashReporterPath_temp);
#else
// On Android, we launch using the application package name
// instead of a filename, so use ANDROID_PACKAGE_NAME to do that here.
nsCString package(ANDROID_PACKAGE_NAME "/org.mozilla.gecko.CrashReporter");
crashReporterPath = ToNewCString(package);
#endif
}
// get temp path to use for minidump path
#if defined(XP_WIN32)
nsString tempPath;
// first figure out buffer size
int pathLen = GetTempPath(0, nullptr);
if (pathLen == 0)
return NS_ERROR_FAILURE;
tempPath.SetLength(pathLen);
GetTempPath(pathLen, (LPWSTR)tempPath.BeginWriting());
#elif defined(XP_MACOSX)
nsCString tempPath;
FSRef fsRef;
OSErr err = FSFindFolder(kUserDomain, kTemporaryFolderType,
kCreateFolder, &fsRef);
if (err != noErr)
return NS_ERROR_FAILURE;
char path[PATH_MAX];
OSStatus status = FSRefMakePath(&fsRef, (UInt8*)path, PATH_MAX);
if (status != noErr)
return NS_ERROR_FAILURE;
tempPath = path;
#elif defined(__ANDROID__)
// GeckoAppShell or Gonk's init.rc sets this in the environment
const char *tempenv = PR_GetEnv("TMPDIR");
if (!tempenv)
return NS_ERROR_FAILURE;
nsCString tempPath(tempenv);
#elif defined(XP_UNIX)
// we assume it's always /tmp on unix systems
nsCString tempPath = NS_LITERAL_CSTRING("/tmp/");
#else
#error "Implement this for your platform"
#endif
#ifdef XP_MACOSX
// Initialize spawn attributes, since this calls malloc.
if (posix_spawnattr_init(&spawnattr) != 0) {
return NS_ERROR_FAILURE;
}
// Set spawn attributes.
size_t attr_count = ArrayLength(pref_cpu_types);
size_t attr_ocount = 0;
if (posix_spawnattr_setbinpref_np(&spawnattr,
attr_count,
pref_cpu_types,
&attr_ocount) != 0 ||
attr_ocount != attr_count) {
posix_spawnattr_destroy(&spawnattr);
return NS_ERROR_FAILURE;
}
#endif
#ifdef XP_WIN32
ReserveBreakpadVM();
MINIDUMP_TYPE minidump_type = MiniDumpNormal;
// Try to determine what version of dbghelp.dll we're using.
// MinidumpWithFullMemoryInfo is only available in 6.1.x or newer.
DWORD version_size = GetFileVersionInfoSizeW(L"dbghelp.dll", nullptr);
if (version_size > 0) {
std::vector<BYTE> buffer(version_size);
if (GetFileVersionInfoW(L"dbghelp.dll",
0,
version_size,
&buffer[0])) {
UINT len;
VS_FIXEDFILEINFO* file_info;
VerQueryValue(&buffer[0], L"\\", (void**)&file_info, &len);
WORD major = HIWORD(file_info->dwFileVersionMS),
minor = LOWORD(file_info->dwFileVersionMS),
revision = HIWORD(file_info->dwFileVersionLS);
if (major > 6 || (major == 6 && minor > 1) ||
(major == 6 && minor == 1 && revision >= 7600)) {
minidump_type = MiniDumpWithFullMemoryInfo;
}
}
}
const char* e = PR_GetEnv("MOZ_CRASHREPORTER_FULLDUMP");
if (e && *e) {
minidump_type = MiniDumpWithFullMemory;
}
#endif // XP_WIN32
#ifdef MOZ_WIDGET_ANDROID
androidUserSerial = getenv("MOZ_ANDROID_USER_SERIAL_NUMBER");
#endif
// now set the exception handler
#ifdef XP_LINUX
MinidumpDescriptor descriptor(tempPath.get());
#endif
gExceptionHandler = new google_breakpad::
ExceptionHandler(
#ifdef XP_LINUX
descriptor,
#else
tempPath.get(),
#endif
#ifdef XP_WIN
FPEFilter,
#else
Filter,
#endif
MinidumpCallback,
nullptr,
#ifdef XP_WIN32
google_breakpad::ExceptionHandler::HANDLER_ALL,
minidump_type,
(const wchar_t*) nullptr,
nullptr);
#else
true
#ifdef XP_MACOSX
, nullptr
#endif
#ifdef XP_LINUX
, -1
#endif
);
#endif // XP_WIN32
if (!gExceptionHandler)
return NS_ERROR_OUT_OF_MEMORY;
#ifdef XP_WIN
gExceptionHandler->set_handle_debug_exceptions(true);
// protect the crash reporter from being unloaded
gBlockUnhandledExceptionFilter = true;
gKernel32Intercept.Init("kernel32.dll");
bool ok = gKernel32Intercept.AddHook("SetUnhandledExceptionFilter",
reinterpret_cast<intptr_t>(patched_SetUnhandledExceptionFilter),
(void**) &stub_SetUnhandledExceptionFilter);
#ifdef DEBUG
if (!ok)
printf_stderr ("SetUnhandledExceptionFilter hook failed; crash reporter is vulnerable.\n");
#endif
#endif
// store application start time
char timeString[32];
time_t startupTime = time(nullptr);
XP_TTOA(startupTime, timeString, 10);
AnnotateCrashReport(NS_LITERAL_CSTRING("StartupTime"),
nsDependentCString(timeString));
#if defined(XP_MACOSX)
// On OS X, many testers like to see the OS crash reporting dialog
// since it offers immediate stack traces. We allow them to set
// a default to pass exceptions to the OS handler.
Boolean keyExistsAndHasValidFormat = false;
Boolean prefValue = ::CFPreferencesGetAppBooleanValue(CFSTR("OSCrashReporter"),
kCFPreferencesCurrentApplication,
&keyExistsAndHasValidFormat);
if (keyExistsAndHasValidFormat)
showOSCrashReporter = prefValue;
#endif
#if defined(MOZ_WIDGET_ANDROID)
for (unsigned int i = 0; i < library_mappings.size(); i++) {
u_int8_t guid[sizeof(MDGUID)];
google_breakpad::FileID::ElfFileIdentifierFromMappedFile((void const *)library_mappings[i].start_address, guid);
gExceptionHandler->AddMappingInfo(library_mappings[i].name,
guid,
library_mappings[i].start_address,
library_mappings[i].length,
library_mappings[i].file_offset);
}
#endif
mozalloc_set_oom_abort_handler(AnnotateOOMAllocationSize);
return NS_OK;
}
bool GetEnabled()
{
return gExceptionHandler != nullptr;
}
bool GetMinidumpPath(nsAString& aPath)
{
if (!gExceptionHandler)
return false;
#ifndef XP_LINUX
aPath = CONVERT_XP_CHAR_TO_UTF16(gExceptionHandler->dump_path().c_str());
#else
aPath = CONVERT_XP_CHAR_TO_UTF16(
gExceptionHandler->minidump_descriptor().directory().c_str());
#endif
return true;
}
nsresult SetMinidumpPath(const nsAString& aPath)
{
if (!gExceptionHandler)
return NS_ERROR_NOT_INITIALIZED;
#ifdef XP_WIN32
gExceptionHandler->set_dump_path(char16ptr_t(aPath.BeginReading()));
#elif defined(XP_LINUX)
gExceptionHandler->set_minidump_descriptor(
MinidumpDescriptor(NS_ConvertUTF16toUTF8(aPath).BeginReading()));
#else
gExceptionHandler->set_dump_path(NS_ConvertUTF16toUTF8(aPath).BeginReading());
#endif
return NS_OK;
}
static nsresult
WriteDataToFile(nsIFile* aFile, const nsACString& data)
{
PRFileDesc* fd;
nsresult rv = aFile->OpenNSPRFileDesc(PR_WRONLY | PR_CREATE_FILE, 00600, &fd);
NS_ENSURE_SUCCESS(rv, rv);
rv = NS_OK;
if (PR_Write(fd, data.Data(), data.Length()) == -1) {
rv = NS_ERROR_FAILURE;
}
PR_Close(fd);
return rv;
}
static nsresult
GetFileContents(nsIFile* aFile, nsACString& data)
{
PRFileDesc* fd;
nsresult rv = aFile->OpenNSPRFileDesc(PR_RDONLY, 0, &fd);
NS_ENSURE_SUCCESS(rv, rv);
rv = NS_OK;
int32_t filesize = PR_Available(fd);
if (filesize <= 0) {
rv = NS_ERROR_FILE_NOT_FOUND;
}
else {
data.SetLength(filesize);
if (PR_Read(fd, data.BeginWriting(), filesize) == -1) {
rv = NS_ERROR_FAILURE;
}
}
PR_Close(fd);
return rv;
}
// Function typedef for initializing a piece of data that we
// don't already have.
typedef nsresult (*InitDataFunc)(nsACString&);
// Attempt to read aFile's contents into aContents, if aFile
// does not exist, create it and initialize its contents
// by calling aInitFunc for the data.
static nsresult
GetOrInit(nsIFile* aDir, const nsACString& filename,
nsACString& aContents, InitDataFunc aInitFunc)
{
bool exists;
nsCOMPtr<nsIFile> dataFile;
nsresult rv = aDir->Clone(getter_AddRefs(dataFile));
NS_ENSURE_SUCCESS(rv, rv);
rv = dataFile->AppendNative(filename);
NS_ENSURE_SUCCESS(rv, rv);
rv = dataFile->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (!exists) {
if (aInitFunc) {
// get the initial value and write it to the file
rv = aInitFunc(aContents);
NS_ENSURE_SUCCESS(rv, rv);
rv = WriteDataToFile(dataFile, aContents);
}
else {
// didn't pass in an init func
rv = NS_ERROR_FAILURE;
}
}
else {
// just get the file's contents
rv = GetFileContents(dataFile, aContents);
}
return rv;
}
// Init the "install time" data. We're taking an easy way out here
// and just setting this to "the time when this version was first run".
static nsresult
InitInstallTime(nsACString& aInstallTime)
{
time_t t = time(nullptr);
char buf[16];
sprintf(buf, "%ld", t);
aInstallTime = buf;
return NS_OK;
}
// Annotate the crash report with a Unique User ID and time
// since install. Also do some prep work for recording
// time since last crash, which must be calculated at
// crash time.
// If any piece of data doesn't exist, initialize it first.
nsresult SetupExtraData(nsIFile* aAppDataDirectory,
const nsACString& aBuildID)
{
nsCOMPtr<nsIFile> dataDirectory;
nsresult rv = aAppDataDirectory->Clone(getter_AddRefs(dataDirectory));
NS_ENSURE_SUCCESS(rv, rv);
rv = dataDirectory->AppendNative(NS_LITERAL_CSTRING("Crash Reports"));
NS_ENSURE_SUCCESS(rv, rv);
bool exists;
rv = dataDirectory->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (!exists) {
rv = dataDirectory->Create(nsIFile::DIRECTORY_TYPE, 0700);
NS_ENSURE_SUCCESS(rv, rv);
}
#if defined(XP_WIN32)
nsAutoString dataDirEnv(NS_LITERAL_STRING("MOZ_CRASHREPORTER_DATA_DIRECTORY="));
nsAutoString dataDirectoryPath;
rv = dataDirectory->GetPath(dataDirectoryPath);
NS_ENSURE_SUCCESS(rv, rv);
dataDirEnv.Append(dataDirectoryPath);
_wputenv(dataDirEnv.get());
#else
// Save this path in the environment for the crash reporter application.
nsAutoCString dataDirEnv("MOZ_CRASHREPORTER_DATA_DIRECTORY=");
nsAutoCString dataDirectoryPath;
rv = dataDirectory->GetNativePath(dataDirectoryPath);
NS_ENSURE_SUCCESS(rv, rv);
dataDirEnv.Append(dataDirectoryPath);
char* env = ToNewCString(dataDirEnv);
NS_ENSURE_TRUE(env, NS_ERROR_OUT_OF_MEMORY);
PR_SetEnv(env);
#endif
nsAutoCString data;
if(NS_SUCCEEDED(GetOrInit(dataDirectory,
NS_LITERAL_CSTRING("InstallTime") + aBuildID,
data, InitInstallTime)))
AnnotateCrashReport(NS_LITERAL_CSTRING("InstallTime"), data);
// this is a little different, since we can't init it with anything,
// since it's stored at crash time, and we can't annotate the
// crash report with the stored value, since we really want
// (now - LastCrash), so we just get a value if it exists,
// and store it in a time_t value.
if(NS_SUCCEEDED(GetOrInit(dataDirectory, NS_LITERAL_CSTRING("LastCrash"),
data, nullptr))) {
lastCrashTime = (time_t)atol(data.get());
}
// not really the best place to init this, but I have the path I need here
nsCOMPtr<nsIFile> lastCrashFile;
rv = dataDirectory->Clone(getter_AddRefs(lastCrashFile));
NS_ENSURE_SUCCESS(rv, rv);
rv = lastCrashFile->AppendNative(NS_LITERAL_CSTRING("LastCrash"));
NS_ENSURE_SUCCESS(rv, rv);
memset(lastCrashTimeFilename, 0, sizeof(lastCrashTimeFilename));
#if defined(XP_WIN32)
nsAutoString filename;
rv = lastCrashFile->GetPath(filename);
NS_ENSURE_SUCCESS(rv, rv);
if (filename.Length() < XP_PATH_MAX)
wcsncpy(lastCrashTimeFilename, filename.get(), filename.Length());
#else
nsAutoCString filename;
rv = lastCrashFile->GetNativePath(filename);
NS_ENSURE_SUCCESS(rv, rv);
if (filename.Length() < XP_PATH_MAX)
strncpy(lastCrashTimeFilename, filename.get(), filename.Length());
#endif
if (headlessClient) {
nsCOMPtr<nsIFile> markerFile;
rv = dataDirectory->Clone(getter_AddRefs(markerFile));
NS_ENSURE_SUCCESS(rv, rv);
rv = markerFile->AppendNative(NS_LITERAL_CSTRING("LastCrashFilename"));
NS_ENSURE_SUCCESS(rv, rv);
memset(crashMarkerFilename, 0, sizeof(crashMarkerFilename));
#if defined(XP_WIN32)
nsAutoString markerFilename;
rv = markerFile->GetPath(markerFilename);
NS_ENSURE_SUCCESS(rv, rv);
if (markerFilename.Length() < XP_PATH_MAX)
wcsncpy(crashMarkerFilename, markerFilename.get(),
markerFilename.Length());
#else
nsAutoCString markerFilename;
rv = markerFile->GetNativePath(markerFilename);
NS_ENSURE_SUCCESS(rv, rv);
if (markerFilename.Length() < XP_PATH_MAX)
strncpy(crashMarkerFilename, markerFilename.get(),
markerFilename.Length());
#endif
}
return NS_OK;
}
static void OOPDeinit();
nsresult UnsetExceptionHandler()
{
#ifdef XP_WIN
// allow SetUnhandledExceptionFilter
gBlockUnhandledExceptionFilter = false;
#endif
delete gExceptionHandler;
// do this here in the unlikely case that we succeeded in allocating
// our strings but failed to allocate gExceptionHandler.
delete crashReporterAPIData_Hash;
crashReporterAPIData_Hash = nullptr;
delete crashReporterAPILock;
crashReporterAPILock = nullptr;
delete notesFieldLock;
notesFieldLock = nullptr;
delete crashReporterAPIData;
crashReporterAPIData = nullptr;
delete notesField;
notesField = nullptr;
delete lastRunCrashID;
lastRunCrashID = nullptr;
if (pendingDirectory) {
NS_Free(pendingDirectory);
pendingDirectory = nullptr;
}
if (crashReporterPath) {
NS_Free(crashReporterPath);
crashReporterPath = nullptr;
}
#ifdef XP_MACOSX
posix_spawnattr_destroy(&spawnattr);
#endif
if (!gExceptionHandler)
return NS_ERROR_NOT_INITIALIZED;
gExceptionHandler = nullptr;
OOPDeinit();
return NS_OK;
}
static void ReplaceChar(nsCString& str, const nsACString& character,
const nsACString& replacement)
{
nsCString::const_iterator start, end;
str.BeginReading(start);
str.EndReading(end);
while (FindInReadable(character, start, end)) {
int32_t pos = end.size_backward();
str.Replace(pos - 1, 1, replacement);
str.BeginReading(start);
start.advance(pos + replacement.Length() - 1);
str.EndReading(end);
}
}
static bool DoFindInReadable(const nsACString& str, const nsACString& value)
{
nsACString::const_iterator start, end;
str.BeginReading(start);
str.EndReading(end);
return FindInReadable(value, start, end);
}
static PLDHashOperator EnumerateEntries(const nsACString& key,
nsCString entry,
void* userData)
{
crashReporterAPIData->Append(key + NS_LITERAL_CSTRING("=") + entry +
NS_LITERAL_CSTRING("\n"));
return PL_DHASH_NEXT;
}
// This function is miscompiled with MSVC 2005/2008 when PGO is on.
#ifdef _MSC_VER
#pragma optimize("", off)
#endif
static nsresult
EscapeAnnotation(const nsACString& key, const nsACString& data, nsCString& escapedData)
{
if (DoFindInReadable(key, NS_LITERAL_CSTRING("=")) ||
DoFindInReadable(key, NS_LITERAL_CSTRING("\n")))
return NS_ERROR_INVALID_ARG;
if (DoFindInReadable(data, NS_LITERAL_CSTRING("\0")))
return NS_ERROR_INVALID_ARG;
escapedData = data;
// escape backslashes
ReplaceChar(escapedData, NS_LITERAL_CSTRING("\\"),
NS_LITERAL_CSTRING("\\\\"));
// escape newlines
ReplaceChar(escapedData, NS_LITERAL_CSTRING("\n"),
NS_LITERAL_CSTRING("\\n"));
return NS_OK;
}
#ifdef _MSC_VER
#pragma optimize("", on)
#endif
class DelayedNote
{
public:
DelayedNote(const nsACString& aKey, const nsACString& aData)
: mKey(aKey), mData(aData), mType(Annotation) {}
DelayedNote(const nsACString& aData)
: mData(aData), mType(AppNote) {}
void Run()
{
if (mType == Annotation) {
AnnotateCrashReport(mKey, mData);
} else {
AppendAppNotesToCrashReport(mData);
}
}
private:
nsCString mKey;
nsCString mData;
enum AnnotationType { Annotation, AppNote } mType;
};
static void
EnqueueDelayedNote(DelayedNote* aNote)
{
if (!gDelayedAnnotations) {
gDelayedAnnotations = new nsTArray<nsAutoPtr<DelayedNote> >();
}
gDelayedAnnotations->AppendElement(aNote);
}
nsresult AnnotateCrashReport(const nsACString& key, const nsACString& data)
{
if (!GetEnabled())
return NS_ERROR_NOT_INITIALIZED;
nsCString escapedData;
nsresult rv = EscapeAnnotation(key, data, escapedData);
if (NS_FAILED(rv))
return rv;
if (XRE_GetProcessType() != GeckoProcessType_Default) {
if (!NS_IsMainThread()) {
NS_ERROR("Cannot call AnnotateCrashReport in child processes from non-main thread.");
return NS_ERROR_FAILURE;
}
PCrashReporterChild* reporter = CrashReporterChild::GetCrashReporter();
if (!reporter) {
EnqueueDelayedNote(new DelayedNote(key, data));
return NS_OK;
}
if (!reporter->SendAnnotateCrashReport(nsCString(key), escapedData))
return NS_ERROR_FAILURE;
return NS_OK;
}
MutexAutoLock lock(*crashReporterAPILock);
crashReporterAPIData_Hash->Put(key, escapedData);
// now rebuild the file contents
crashReporterAPIData->Truncate(0);
crashReporterAPIData_Hash->EnumerateRead(EnumerateEntries,
crashReporterAPIData);
return NS_OK;
}
nsresult SetGarbageCollecting(bool collecting)
{
if (!GetEnabled())
return NS_ERROR_NOT_INITIALIZED;
isGarbageCollecting = collecting;
return NS_OK;
}
nsresult AppendAppNotesToCrashReport(const nsACString& data)
{
if (!GetEnabled())
return NS_ERROR_NOT_INITIALIZED;
if (DoFindInReadable(data, NS_LITERAL_CSTRING("\0")))
return NS_ERROR_INVALID_ARG;
if (XRE_GetProcessType() != GeckoProcessType_Default) {
if (!NS_IsMainThread()) {
NS_ERROR("Cannot call AnnotateCrashReport in child processes from non-main thread.");
return NS_ERROR_FAILURE;
}
PCrashReporterChild* reporter = CrashReporterChild::GetCrashReporter();
if (!reporter) {
EnqueueDelayedNote(new DelayedNote(data));
return NS_OK;
}
// Since we don't go through AnnotateCrashReport in the parent process,
// we must ensure that the data is escaped and valid before the parent
// sees it.
nsCString escapedData;
nsresult rv = EscapeAnnotation(NS_LITERAL_CSTRING("Notes"), data, escapedData);
if (NS_FAILED(rv))
return rv;
if (!reporter->SendAppendAppNotes(escapedData))
return NS_ERROR_FAILURE;
return NS_OK;
}
MutexAutoLock lock(*notesFieldLock);
notesField->Append(data);
return AnnotateCrashReport(NS_LITERAL_CSTRING("Notes"), *notesField);
}
// Returns true if found, false if not found.
bool GetAnnotation(const nsACString& key, nsACString& data)
{
if (!gExceptionHandler)
return false;
nsAutoCString entry;
if (!crashReporterAPIData_Hash->Get(key, &entry))
return false;
data = entry;
return true;
}
nsresult RegisterAppMemory(void* ptr, size_t length)
{
if (!GetEnabled())
return NS_ERROR_NOT_INITIALIZED;
#if defined(XP_LINUX) || defined(XP_WIN32)
gExceptionHandler->RegisterAppMemory(ptr, length);
return NS_OK;
#else
return NS_ERROR_NOT_IMPLEMENTED;
#endif
}
nsresult UnregisterAppMemory(void* ptr)
{
if (!GetEnabled())
return NS_ERROR_NOT_INITIALIZED;
#if defined(XP_LINUX) || defined(XP_WIN32)
gExceptionHandler->UnregisterAppMemory(ptr);
return NS_OK;
#else
return NS_ERROR_NOT_IMPLEMENTED;
#endif
}
bool GetServerURL(nsACString& aServerURL)
{
if (!gExceptionHandler)
return false;
return GetAnnotation(NS_LITERAL_CSTRING("ServerURL"), aServerURL);
}
nsresult SetServerURL(const nsACString& aServerURL)
{
// store server URL with the API data
// the client knows to handle this specially
return AnnotateCrashReport(NS_LITERAL_CSTRING("ServerURL"),
aServerURL);
}
nsresult
SetRestartArgs(int argc, char** argv)
{
if (!gExceptionHandler)
return NS_OK;
int i;
nsAutoCString envVar;
char *env;
char *argv0 = getenv("MOZ_APP_LAUNCHER");
for (i = 0; i < argc; i++) {
envVar = "MOZ_CRASHREPORTER_RESTART_ARG_";
envVar.AppendInt(i);
envVar += "=";
if (argv0 && i == 0) {
// Is there a request to suppress default binary launcher?
envVar += argv0;
} else {
envVar += argv[i];
}
// PR_SetEnv() wants the string to be available for the lifetime
// of the app, so dup it here
env = ToNewCString(envVar);
if (!env)
return NS_ERROR_OUT_OF_MEMORY;
PR_SetEnv(env);
}
// make sure the arg list is terminated
envVar = "MOZ_CRASHREPORTER_RESTART_ARG_";
envVar.AppendInt(i);
envVar += "=";
// PR_SetEnv() wants the string to be available for the lifetime
// of the app, so dup it here
env = ToNewCString(envVar);
if (!env)
return NS_ERROR_OUT_OF_MEMORY;
PR_SetEnv(env);
// make sure we save the info in XUL_APP_FILE for the reporter
const char *appfile = PR_GetEnv("XUL_APP_FILE");
if (appfile && *appfile) {
envVar = "MOZ_CRASHREPORTER_RESTART_XUL_APP_FILE=";
envVar += appfile;
env = ToNewCString(envVar);
PR_SetEnv(env);
}
return NS_OK;
}
#ifdef XP_WIN32
nsresult WriteMinidumpForException(EXCEPTION_POINTERS* aExceptionInfo)
{
if (!gExceptionHandler)
return NS_ERROR_NOT_INITIALIZED;
return gExceptionHandler->WriteMinidumpForException(aExceptionInfo) ? NS_OK : NS_ERROR_FAILURE;
}
#endif
#ifdef XP_MACOSX
nsresult AppendObjCExceptionInfoToAppNotes(void *inException)
{
nsAutoCString excString;
GetObjCExceptionInfo(inException, excString);
AppendAppNotesToCrashReport(excString);
return NS_OK;
}
#endif
/*
* Combined code to get/set the crash reporter submission pref on
* different platforms.
*/
static nsresult PrefSubmitReports(bool* aSubmitReports, bool writePref)
{
nsresult rv;
#if defined(XP_WIN32)
/*
* NOTE! This needs to stay in sync with the preference checking code
* in toolkit/crashreporter/client/crashreporter_win.cpp
*/
nsCOMPtr<nsIXULAppInfo> appinfo =
do_GetService("@mozilla.org/xre/app-info;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString appVendor, appName;
rv = appinfo->GetVendor(appVendor);
NS_ENSURE_SUCCESS(rv, rv);
rv = appinfo->GetName(appName);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIWindowsRegKey> regKey
(do_CreateInstance("@mozilla.org/windows-registry-key;1", &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString regPath;
regPath.AppendLiteral("Software\\");
// We need to ensure the registry keys are created so we can properly
// write values to it
// Create appVendor key
if(!appVendor.IsEmpty()) {
regPath.Append(appVendor);
regKey->Create(nsIWindowsRegKey::ROOT_KEY_CURRENT_USER,
NS_ConvertUTF8toUTF16(regPath),
nsIWindowsRegKey::ACCESS_SET_VALUE);
regPath.AppendLiteral("\\");
}
// Create appName key
regPath.Append(appName);
regKey->Create(nsIWindowsRegKey::ROOT_KEY_CURRENT_USER,
NS_ConvertUTF8toUTF16(regPath),
nsIWindowsRegKey::ACCESS_SET_VALUE);
regPath.AppendLiteral("\\");
// Create Crash Reporter key
regPath.AppendLiteral("Crash Reporter");
regKey->Create(nsIWindowsRegKey::ROOT_KEY_CURRENT_USER,
NS_ConvertUTF8toUTF16(regPath),
nsIWindowsRegKey::ACCESS_SET_VALUE);
// If we're saving the pref value, just write it to ROOT_KEY_CURRENT_USER
// and we're done.
if (writePref) {
rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_CURRENT_USER,
NS_ConvertUTF8toUTF16(regPath),
nsIWindowsRegKey::ACCESS_SET_VALUE);
NS_ENSURE_SUCCESS(rv, rv);
uint32_t value = *aSubmitReports ? 1 : 0;
rv = regKey->WriteIntValue(NS_LITERAL_STRING("SubmitCrashReport"), value);
regKey->Close();
return rv;
}
// We're reading the pref value, so we need to first look under
// ROOT_KEY_LOCAL_MACHINE to see if it's set there, and then fall back to
// ROOT_KEY_CURRENT_USER. If it's not set in either place, the pref defaults
// to "true".
uint32_t value;
rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_LOCAL_MACHINE,
NS_ConvertUTF8toUTF16(regPath),
nsIWindowsRegKey::ACCESS_QUERY_VALUE);
if (NS_SUCCEEDED(rv)) {
rv = regKey->ReadIntValue(NS_LITERAL_STRING("SubmitCrashReport"), &value);
regKey->Close();
if (NS_SUCCEEDED(rv)) {
*aSubmitReports = !!value;
return NS_OK;
}
}
rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_CURRENT_USER,
NS_ConvertUTF8toUTF16(regPath),
nsIWindowsRegKey::ACCESS_QUERY_VALUE);
if (NS_FAILED(rv)) {
*aSubmitReports = true;
return NS_OK;
}
rv = regKey->ReadIntValue(NS_LITERAL_STRING("SubmitCrashReport"), &value);
// default to true on failure
if (NS_FAILED(rv)) {
value = 1;
rv = NS_OK;
}
regKey->Close();
*aSubmitReports = !!value;
return NS_OK;
#elif defined(XP_MACOSX)
rv = NS_OK;
if (writePref) {
CFPropertyListRef cfValue = (CFPropertyListRef)(*aSubmitReports ? kCFBooleanTrue : kCFBooleanFalse);
::CFPreferencesSetAppValue(CFSTR("submitReport"),
cfValue,
reporterClientAppID);
if (!::CFPreferencesAppSynchronize(reporterClientAppID))
rv = NS_ERROR_FAILURE;
}
else {
*aSubmitReports = true;
Boolean keyExistsAndHasValidFormat = false;
Boolean prefValue = ::CFPreferencesGetAppBooleanValue(CFSTR("submitReport"),
reporterClientAppID,
&keyExistsAndHasValidFormat);
if (keyExistsAndHasValidFormat)
*aSubmitReports = !!prefValue;
}
return rv;
#elif defined(XP_UNIX)
/*
* NOTE! This needs to stay in sync with the preference checking code
* in toolkit/crashreporter/client/crashreporter_linux.cpp
*/
nsCOMPtr<nsIFile> reporterINI;
rv = NS_GetSpecialDirectory("UAppData", getter_AddRefs(reporterINI));
NS_ENSURE_SUCCESS(rv, rv);
reporterINI->AppendNative(NS_LITERAL_CSTRING("Crash Reports"));
reporterINI->AppendNative(NS_LITERAL_CSTRING("crashreporter.ini"));
bool exists;
rv = reporterINI->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (!exists) {
if (!writePref) {
// If reading the pref, default to true if .ini doesn't exist.
*aSubmitReports = true;
return NS_OK;
}
// Create the file so the INI processor can write to it.
rv = reporterINI->Create(nsIFile::NORMAL_FILE_TYPE, 0600);
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<nsIINIParserFactory> iniFactory =
do_GetService("@mozilla.org/xpcom/ini-processor-factory;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIINIParser> iniParser;
rv = iniFactory->CreateINIParser(reporterINI,
getter_AddRefs(iniParser));
NS_ENSURE_SUCCESS(rv, rv);
// If we're writing the pref, just set and we're done.
if (writePref) {
nsCOMPtr<nsIINIParserWriter> iniWriter = do_QueryInterface(iniParser);
NS_ENSURE_TRUE(iniWriter, NS_ERROR_FAILURE);
rv = iniWriter->SetString(NS_LITERAL_CSTRING("Crash Reporter"),
NS_LITERAL_CSTRING("SubmitReport"),
*aSubmitReports ? NS_LITERAL_CSTRING("1") :
NS_LITERAL_CSTRING("0"));
NS_ENSURE_SUCCESS(rv, rv);
rv = iniWriter->WriteFile(nullptr, 0);
return rv;
}
nsAutoCString submitReportValue;
rv = iniParser->GetString(NS_LITERAL_CSTRING("Crash Reporter"),
NS_LITERAL_CSTRING("SubmitReport"),
submitReportValue);
// Default to "true" if the pref can't be found.
if (NS_FAILED(rv))
*aSubmitReports = true;
else if (submitReportValue.EqualsASCII("0"))
*aSubmitReports = false;
else
*aSubmitReports = true;
return NS_OK;
#else
return NS_ERROR_NOT_IMPLEMENTED;
#endif
}
nsresult GetSubmitReports(bool* aSubmitReports)
{
return PrefSubmitReports(aSubmitReports, false);
}
nsresult SetSubmitReports(bool aSubmitReports)
{
nsresult rv;
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
if (!obsServ) {
return NS_ERROR_FAILURE;
}
rv = PrefSubmitReports(&aSubmitReports, true);
if (NS_FAILED(rv)) {
return rv;
}
obsServ->NotifyObservers(nullptr, "submit-reports-pref-changed", nullptr);
return NS_OK;
}
static void
FindPendingDir()
{
if (pendingDirectory)
return;
nsCOMPtr<nsIFile> pendingDir;
nsresult rv = NS_GetSpecialDirectory("UAppData", getter_AddRefs(pendingDir));
if (NS_FAILED(rv)) {
NS_WARNING("Couldn't get the user appdata directory, crash dumps will go in an unusual location");
}
else {
pendingDir->Append(NS_LITERAL_STRING("Crash Reports"));
pendingDir->Append(NS_LITERAL_STRING("pending"));
#ifdef XP_WIN
nsString path;
pendingDir->GetPath(path);
pendingDirectory = reinterpret_cast<wchar_t*>(ToNewUnicode(path));
#else
nsCString path;
pendingDir->GetNativePath(path);
pendingDirectory = ToNewCString(path);
#endif
}
}
// The "pending" dir is Crash Reports/pending, from which minidumps
// can be submitted. Because this method may be called off the main thread,
// we store the pending directory as a path.
static bool
GetPendingDir(nsIFile** dir)
{
MOZ_ASSERT(OOPInitialized());
if (!pendingDirectory) {
return false;
}
nsCOMPtr<nsIFile> pending = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID);
if (!pending) {
NS_WARNING("Can't set up pending directory during shutdown.");
return false;
}
#ifdef XP_WIN
pending->InitWithPath(nsDependentString(pendingDirectory));
#else
pending->InitWithNativePath(nsDependentCString(pendingDirectory));
#endif
pending.swap(*dir);
return true;
}
// The "limbo" dir is where minidumps go to wait for something else to
// use them. If we're |ShouldReport()|, then the "something else" is
// a minidump submitter, and they're coming from the
// Crash Reports/pending/ dir. Otherwise, we don't know what the
// "somthing else" is, but the minidumps stay in [profile]/minidumps/
// limbo.
static bool
GetMinidumpLimboDir(nsIFile** dir)
{
if (ShouldReport()) {
return GetPendingDir(dir);
}
else {
#ifndef XP_LINUX
CreateFileFromPath(gExceptionHandler->dump_path(), dir);
#else
CreateFileFromPath(gExceptionHandler->minidump_descriptor().directory(),
dir);
#endif
return nullptr != *dir;
}
}
bool
GetMinidumpForID(const nsAString& id, nsIFile** minidump)
{
if (!GetMinidumpLimboDir(minidump))
return false;
(*minidump)->Append(id + NS_LITERAL_STRING(".dmp"));
return true;
}
bool
GetIDFromMinidump(nsIFile* minidump, nsAString& id)
{
if (NS_SUCCEEDED(minidump->GetLeafName(id))) {
id.Replace(id.Length() - 4, 4, NS_LITERAL_STRING(""));
return true;
}
return false;
}
bool
GetExtraFileForID(const nsAString& id, nsIFile** extraFile)
{
if (!GetMinidumpLimboDir(extraFile))
return false;
(*extraFile)->Append(id + NS_LITERAL_STRING(".extra"));
return true;
}
bool
GetExtraFileForMinidump(nsIFile* minidump, nsIFile** extraFile)
{
nsAutoString leafName;
nsresult rv = minidump->GetLeafName(leafName);
if (NS_FAILED(rv))
return false;
nsCOMPtr<nsIFile> extraF;
rv = minidump->Clone(getter_AddRefs(extraF));
if (NS_FAILED(rv))
return false;
leafName.Replace(leafName.Length() - 3, 3,
NS_LITERAL_STRING("extra"));
rv = extraF->SetLeafName(leafName);
if (NS_FAILED(rv))
return false;
*extraFile = nullptr;
extraF.swap(*extraFile);
return true;
}
bool
AppendExtraData(const nsAString& id, const AnnotationTable& data)
{
nsCOMPtr<nsIFile> extraFile;
if (!GetExtraFileForID(id, getter_AddRefs(extraFile)))
return false;
return AppendExtraData(extraFile, data);
}
//-----------------------------------------------------------------------------
// Helpers for AppendExtraData()
//
struct Blacklist {
Blacklist() : mItems(nullptr), mLen(0) { }
Blacklist(const char** items, int len) : mItems(items), mLen(len) { }
bool Contains(const nsACString& key) const {
for (int i = 0; i < mLen; ++i)
if (key.EqualsASCII(mItems[i]))
return true;
return false;
}
const char** mItems;
const int mLen;
};
struct EnumerateAnnotationsContext {
const Blacklist& blacklist;
PRFileDesc* fd;
};
static void
WriteAnnotation(PRFileDesc* fd, const nsACString& key, const nsACString& value)
{
PR_Write(fd, key.BeginReading(), key.Length());
PR_Write(fd, "=", 1);
PR_Write(fd, value.BeginReading(), value.Length());
PR_Write(fd, "\n", 1);
}
static PLDHashOperator
EnumerateAnnotations(const nsACString& key,
nsCString entry,
void* userData)
{
EnumerateAnnotationsContext* ctx =
static_cast<EnumerateAnnotationsContext*>(userData);
const Blacklist& blacklist = ctx->blacklist;
// skip entries in the blacklist
if (blacklist.Contains(key))
return PL_DHASH_NEXT;
WriteAnnotation(ctx->fd, key, entry);
return PL_DHASH_NEXT;
}
static bool
WriteExtraData(nsIFile* extraFile,
const AnnotationTable& data,
const Blacklist& blacklist,
bool writeCrashTime=false,
bool truncate=false)
{
PRFileDesc* fd;
int truncOrAppend = truncate ? PR_TRUNCATE : PR_APPEND;
nsresult rv =
extraFile->OpenNSPRFileDesc(PR_WRONLY | PR_CREATE_FILE | truncOrAppend,
0600, &fd);
if (NS_FAILED(rv))
return false;
EnumerateAnnotationsContext ctx = { blacklist, fd };
data.EnumerateRead(EnumerateAnnotations, &ctx);
if (writeCrashTime) {
time_t crashTime = time(nullptr);
char crashTimeString[32];
XP_TTOA(crashTime, crashTimeString, 10);
WriteAnnotation(fd,
nsDependentCString("CrashTime"),
nsDependentCString(crashTimeString));
}
PR_Close(fd);
return true;
}
bool
AppendExtraData(nsIFile* extraFile, const AnnotationTable& data)
{
return WriteExtraData(extraFile, data, Blacklist());
}
static bool
WriteExtraForMinidump(nsIFile* minidump,
const Blacklist& blacklist,
nsIFile** extraFile)
{
nsCOMPtr<nsIFile> extra;
if (!GetExtraFileForMinidump(minidump, getter_AddRefs(extra)))
return false;
if (!WriteExtraData(extra, *crashReporterAPIData_Hash,
blacklist,
true /*write crash time*/,
true /*truncate*/))
return false;
*extraFile = nullptr;
extra.swap(*extraFile);
return true;
}
// It really only makes sense to call this function when
// ShouldReport() is true.
static bool
MoveToPending(nsIFile* dumpFile, nsIFile* extraFile)
{
nsCOMPtr<nsIFile> pendingDir;
if (!GetPendingDir(getter_AddRefs(pendingDir)))
return false;
if (NS_FAILED(dumpFile->MoveTo(pendingDir, EmptyString()))) {
return false;
}
if (extraFile && NS_FAILED(extraFile->MoveTo(pendingDir, EmptyString()))) {
return false;
}
return true;
}
static void
OnChildProcessDumpRequested(void* aContext,
#ifdef XP_MACOSX
const ClientInfo& aClientInfo,
const xpstring& aFilePath
#else
const ClientInfo* aClientInfo,
const xpstring* aFilePath
#endif
)
{
nsCOMPtr<nsIFile> minidump;
nsCOMPtr<nsIFile> extraFile;
CreateFileFromPath(
#ifdef XP_MACOSX
aFilePath,
#else
*aFilePath,
#endif
getter_AddRefs(minidump));
if (!WriteExtraForMinidump(minidump,
Blacklist(kSubprocessBlacklist,
ArrayLength(kSubprocessBlacklist)),
getter_AddRefs(extraFile)))
return;
if (ShouldReport())
MoveToPending(minidump, extraFile);
{
uint32_t pid =
#ifdef XP_MACOSX
aClientInfo.pid();
#else
aClientInfo->pid();
#endif
#ifdef MOZ_CRASHREPORTER_INJECTOR
bool runCallback;
#endif
{
MutexAutoLock lock(*dumpMapLock);
ChildProcessData* pd = pidToMinidump->PutEntry(pid);
MOZ_ASSERT(!pd->minidump);
pd->minidump = minidump;
pd->sequence = ++crashSequence;
#ifdef MOZ_CRASHREPORTER_INJECTOR
runCallback = nullptr != pd->callback;
#endif
}
#ifdef MOZ_CRASHREPORTER_INJECTOR
if (runCallback)
NS_DispatchToMainThread(new ReportInjectedCrash(pid));
#endif
}
}
static bool
OOPInitialized()
{
return pidToMinidump != nullptr;
}
#ifdef XP_MACOSX
static bool ChildFilter(void *context) {
mozilla::StopLateWriteChecks();
return true;
}
#endif
void
OOPInit()
{
if (OOPInitialized())
return;
MOZ_ASSERT(NS_IsMainThread());
NS_ABORT_IF_FALSE(gExceptionHandler != nullptr,
"attempt to initialize OOP crash reporter before in-process crashreporter!");
#if defined(XP_WIN)
childCrashNotifyPipe =
PR_smprintf("\\\\.\\pipe\\gecko-crash-server-pipe.%i",
static_cast<int>(::GetCurrentProcessId()));
const std::wstring dumpPath = gExceptionHandler->dump_path();
crashServer = new CrashGenerationServer(
NS_ConvertASCIItoUTF16(childCrashNotifyPipe).get(),
nullptr, // default security attributes
nullptr, nullptr, // we don't care about process connect here
OnChildProcessDumpRequested, nullptr,
nullptr, nullptr, // we don't care about process exit here
nullptr, nullptr, // we don't care about upload request here
true, // automatically generate dumps
&dumpPath);
#elif defined(XP_LINUX)
if (!CrashGenerationServer::CreateReportChannel(&serverSocketFd,
&clientSocketFd))
NS_RUNTIMEABORT("can't create crash reporter socketpair()");
const std::string dumpPath =
gExceptionHandler->minidump_descriptor().directory();
crashServer = new CrashGenerationServer(
serverSocketFd,
OnChildProcessDumpRequested, nullptr,
nullptr, nullptr, // we don't care about process exit here
true,
&dumpPath);
#elif defined(XP_MACOSX)
childCrashNotifyPipe =
PR_smprintf("gecko-crash-server-pipe.%i",
static_cast<int>(getpid()));
const std::string dumpPath = gExceptionHandler->dump_path();
crashServer = new CrashGenerationServer(
childCrashNotifyPipe,
ChildFilter,
nullptr,
OnChildProcessDumpRequested, nullptr,
nullptr, nullptr,
true, // automatically generate dumps
dumpPath);
#endif
if (!crashServer->Start())
NS_RUNTIMEABORT("can't start crash reporter server()");
pidToMinidump = new ChildMinidumpMap();
dumpMapLock = new Mutex("CrashReporter::dumpMapLock");
FindPendingDir();
}
static void
OOPDeinit()
{
if (!OOPInitialized()) {
NS_WARNING("OOPDeinit() without successful OOPInit()");
return;
}
#ifdef MOZ_CRASHREPORTER_INJECTOR
if (sInjectorThread) {
sInjectorThread->Shutdown();
NS_RELEASE(sInjectorThread);
}
#endif
delete crashServer;
crashServer = nullptr;
delete dumpMapLock;
dumpMapLock = nullptr;
delete pidToMinidump;
pidToMinidump = nullptr;
#if defined(XP_WIN)
PR_Free(childCrashNotifyPipe);
childCrashNotifyPipe = nullptr;
#endif
}
#if defined(XP_WIN) || defined(XP_MACOSX)
// Parent-side API for children
const char*
GetChildNotificationPipe()
{
if (!GetEnabled())
return kNullNotifyPipe;
MOZ_ASSERT(OOPInitialized());
return childCrashNotifyPipe;
}
#endif
#ifdef MOZ_CRASHREPORTER_INJECTOR
void
InjectCrashReporterIntoProcess(DWORD processID, InjectorCrashCallback* cb)
{
if (!GetEnabled())
return;
if (!OOPInitialized())
OOPInit();
if (!sInjectorThread) {
if (NS_FAILED(NS_NewThread(&sInjectorThread)))
return;
}
{
MutexAutoLock lock(*dumpMapLock);
ChildProcessData* pd = pidToMinidump->PutEntry(processID);
MOZ_ASSERT(!pd->minidump && !pd->callback);
pd->callback = cb;
}
nsCOMPtr<nsIRunnable> r = new InjectCrashRunnable(processID);
sInjectorThread->Dispatch(r, nsIEventTarget::DISPATCH_NORMAL);
}
NS_IMETHODIMP
ReportInjectedCrash::Run()
{
// Crash reporting may have been disabled after this method was dispatched
if (!OOPInitialized())
return NS_OK;
InjectorCrashCallback* cb;
{
MutexAutoLock lock(*dumpMapLock);
ChildProcessData* pd = pidToMinidump->GetEntry(mPID);
if (!pd || !pd->callback)
return NS_OK;
MOZ_ASSERT(pd->minidump);
cb = pd->callback;
}
cb->OnCrash(mPID);
return NS_OK;
}
void
UnregisterInjectorCallback(DWORD processID)
{
if (!OOPInitialized())
return;
MutexAutoLock lock(*dumpMapLock);
pidToMinidump->RemoveEntry(processID);
}
#endif // MOZ_CRASHREPORTER_INJECTOR
bool
CheckForLastRunCrash()
{
if (lastRunCrashID)
return true;
// The exception handler callback leaves the filename of the
// last minidump in a known file.
nsCOMPtr<nsIFile> lastCrashFile;
CreateFileFromPath(crashMarkerFilename,
getter_AddRefs(lastCrashFile));
bool exists;
if (NS_FAILED(lastCrashFile->Exists(&exists)) || !exists) {
return false;
}
nsAutoCString lastMinidump_contents;
if (NS_FAILED(GetFileContents(lastCrashFile, lastMinidump_contents))) {
return false;
}
lastCrashFile->Remove(false);
#ifdef XP_WIN
// Ugly but effective.
nsDependentString lastMinidump(
reinterpret_cast<const char16_t*>(lastMinidump_contents.get()));
#else
nsAutoCString lastMinidump = lastMinidump_contents;
#endif
nsCOMPtr<nsIFile> lastMinidumpFile;
CreateFileFromPath(lastMinidump.get(),
getter_AddRefs(lastMinidumpFile));
if (!lastMinidumpFile || NS_FAILED(lastMinidumpFile->Exists(&exists)) || !exists) {
return false;
}
nsCOMPtr<nsIFile> lastExtraFile;
if (!GetExtraFileForMinidump(lastMinidumpFile,
getter_AddRefs(lastExtraFile))) {
return false;
}
FindPendingDir();
// Move {dump,extra} to pending folder
if (!MoveToPending(lastMinidumpFile, lastExtraFile)) {
return false;
}
lastRunCrashID = new nsString();
return GetIDFromMinidump(lastMinidumpFile, *lastRunCrashID);
}
bool
GetLastRunCrashID(nsAString& id)
{
if (!lastRunCrashID_checked) {
CheckForLastRunCrash();
lastRunCrashID_checked = true;
}
if (!lastRunCrashID) {
return false;
}
id = *lastRunCrashID;
return true;
}
#if defined(XP_WIN)
// Child-side API
bool
SetRemoteExceptionHandler(const nsACString& crashPipe)
{
// crash reporting is disabled
if (crashPipe.Equals(kNullNotifyPipe))
return true;
NS_ABORT_IF_FALSE(!gExceptionHandler, "crash client already init'd");
gExceptionHandler = new google_breakpad::
ExceptionHandler(L"",
FPEFilter,
nullptr, // no minidump callback
nullptr, // no callback context
google_breakpad::ExceptionHandler::HANDLER_ALL,
MiniDumpNormal,
NS_ConvertASCIItoUTF16(crashPipe).get(),
nullptr);
#ifdef XP_WIN
gExceptionHandler->set_handle_debug_exceptions(true);
#endif
// we either do remote or nothing, no fallback to regular crash reporting
return gExceptionHandler->IsOutOfProcess();
}
//--------------------------------------------------
#elif defined(XP_LINUX)
// Parent-side API for children
bool
CreateNotificationPipeForChild(int* childCrashFd, int* childCrashRemapFd)
{
if (!GetEnabled()) {
*childCrashFd = -1;
*childCrashRemapFd = -1;
return true;
}
MOZ_ASSERT(OOPInitialized());
*childCrashFd = clientSocketFd;
*childCrashRemapFd = kMagicChildCrashReportFd;
return true;
}
// Child-side API
bool
SetRemoteExceptionHandler()
{
NS_ABORT_IF_FALSE(!gExceptionHandler, "crash client already init'd");
#ifndef XP_LINUX
xpstring path = "";
#else
// MinidumpDescriptor requires a non-empty path.
google_breakpad::MinidumpDescriptor path(".");
#endif
gExceptionHandler = new google_breakpad::
ExceptionHandler(path,
nullptr, // no filter callback
nullptr, // no minidump callback
nullptr, // no callback context
true, // install signal handlers
kMagicChildCrashReportFd);
if (gDelayedAnnotations) {
for (uint32_t i = 0; i < gDelayedAnnotations->Length(); i++) {
gDelayedAnnotations->ElementAt(i)->Run();
}
delete gDelayedAnnotations;
}
// we either do remote or nothing, no fallback to regular crash reporting
return gExceptionHandler->IsOutOfProcess();
}
//--------------------------------------------------
#elif defined(XP_MACOSX)
// Child-side API
bool
SetRemoteExceptionHandler(const nsACString& crashPipe)
{
// crash reporting is disabled
if (crashPipe.Equals(kNullNotifyPipe))
return true;
NS_ABORT_IF_FALSE(!gExceptionHandler, "crash client already init'd");
gExceptionHandler = new google_breakpad::
ExceptionHandler("",
Filter,
nullptr, // no minidump callback
nullptr, // no callback context
true, // install signal handlers
crashPipe.BeginReading());
// we either do remote or nothing, no fallback to regular crash reporting
return gExceptionHandler->IsOutOfProcess();
}
#endif // XP_WIN
bool
TakeMinidumpForChild(uint32_t childPid, nsIFile** dump, uint32_t* aSequence)
{
if (!GetEnabled())
return false;
MutexAutoLock lock(*dumpMapLock);
ChildProcessData* pd = pidToMinidump->GetEntry(childPid);
if (!pd)
return false;
NS_IF_ADDREF(*dump = pd->minidump);
if (aSequence) {
*aSequence = pd->sequence;
}
pidToMinidump->RemoveEntry(childPid);
return !!*dump;
}
//-----------------------------------------------------------------------------
// CreatePairedMinidumps() and helpers
//
void
RenameAdditionalHangMinidump(nsIFile* minidump, nsIFile* childMinidump,
const nsACString& name)
{
nsCOMPtr<nsIFile> directory;
childMinidump->GetParent(getter_AddRefs(directory));
if (!directory)
return;
nsAutoCString leafName;
childMinidump->GetNativeLeafName(leafName);
// turn "<id>.dmp" into "<id>-<name>.dmp
leafName.Insert(NS_LITERAL_CSTRING("-") + name, leafName.Length() - 4);
minidump->MoveToNative(directory, leafName);
}
static bool
PairedDumpCallback(
#ifdef XP_LINUX
const MinidumpDescriptor& descriptor,
#else
const XP_CHAR* dump_path,
const XP_CHAR* minidump_id,
#endif
void* context,
#ifdef XP_WIN32
EXCEPTION_POINTERS* /*unused*/,
MDRawAssertionInfo* /*unused*/,
#endif
bool succeeded)
{
nsCOMPtr<nsIFile>& minidump = *static_cast< nsCOMPtr<nsIFile>* >(context);
xpstring dump;
#ifdef XP_LINUX
dump = descriptor.path();
#else
dump = dump_path;
dump += XP_PATH_SEPARATOR;
dump += minidump_id;
dump += dumpFileExtension;
#endif
CreateFileFromPath(dump, getter_AddRefs(minidump));
return true;
}
static bool
PairedDumpCallbackExtra(
#ifdef XP_LINUX
const MinidumpDescriptor& descriptor,
#else
const XP_CHAR* dump_path,
const XP_CHAR* minidump_id,
#endif
void* context,
#ifdef XP_WIN32
EXCEPTION_POINTERS* /*unused*/,
MDRawAssertionInfo* /*unused*/,
#endif
bool succeeded)
{
PairedDumpCallback(
#ifdef XP_LINUX
descriptor,
#else
dump_path, minidump_id,
#endif
context,
#ifdef XP_WIN32
nullptr, nullptr,
#endif
succeeded);
nsCOMPtr<nsIFile>& minidump = *static_cast< nsCOMPtr<nsIFile>* >(context);
nsCOMPtr<nsIFile> extra;
return WriteExtraForMinidump(minidump, Blacklist(), getter_AddRefs(extra));
}
ThreadId
CurrentThreadId()
{
#if defined(XP_WIN)
return ::GetCurrentThreadId();
#elif defined(XP_LINUX)
return sys_gettid();
#elif defined(XP_MACOSX)
// Just return an index, since Mach ports can't be directly serialized
thread_act_port_array_t threads_for_task;
mach_msg_type_number_t thread_count;
if (task_threads(mach_task_self(), &threads_for_task, &thread_count))
return -1;
for (unsigned int i = 0; i < thread_count; ++i) {
if (threads_for_task[i] == mach_thread_self())
return i;
}
abort();
#else
# error "Unsupported platform"
#endif
}
#ifdef XP_MACOSX
static mach_port_t
GetChildThread(ProcessHandle childPid, ThreadId childBlamedThread)
{
mach_port_t childThread = MACH_PORT_NULL;
thread_act_port_array_t threads_for_task;
mach_msg_type_number_t thread_count;
if (task_threads(childPid, &threads_for_task, &thread_count)
== KERN_SUCCESS && childBlamedThread < thread_count) {
childThread = threads_for_task[childBlamedThread];
}
return childThread;
}
#endif
bool
CreatePairedMinidumps(ProcessHandle childPid,
ThreadId childBlamedThread,
nsIFile** childDump)
{
if (!GetEnabled())
return false;
#ifdef XP_MACOSX
mach_port_t childThread = GetChildThread(childPid, childBlamedThread);
#else
ThreadId childThread = childBlamedThread;
#endif
xpstring dump_path;
#ifndef XP_LINUX
dump_path = gExceptionHandler->dump_path();
#else
dump_path = gExceptionHandler->minidump_descriptor().directory();
#endif
// dump the child
nsCOMPtr<nsIFile> childMinidump;
if (!google_breakpad::ExceptionHandler::WriteMinidumpForChild(
childPid,
childThread,
dump_path,
PairedDumpCallbackExtra,
static_cast<void*>(&childMinidump)))
return false;
nsCOMPtr<nsIFile> childExtra;
GetExtraFileForMinidump(childMinidump, getter_AddRefs(childExtra));
// dump the parent
nsCOMPtr<nsIFile> parentMinidump;
if (!google_breakpad::ExceptionHandler::WriteMinidump(
dump_path,
#ifdef XP_MACOSX
true, // write exception stream
#endif
PairedDumpCallback,
static_cast<void*>(&parentMinidump))) {
childMinidump->Remove(false);
childExtra->Remove(false);
return false;
}
// success
RenameAdditionalHangMinidump(parentMinidump, childMinidump,
NS_LITERAL_CSTRING("browser"));
if (ShouldReport()) {
MoveToPending(childMinidump, childExtra);
MoveToPending(parentMinidump, nullptr);
}
childMinidump.forget(childDump);
return true;
}
bool
CreateAdditionalChildMinidump(ProcessHandle childPid,
ThreadId childBlamedThread,
nsIFile* parentMinidump,
const nsACString& name)
{
if (!GetEnabled())
return false;
#ifdef XP_MACOSX
mach_port_t childThread = GetChildThread(childPid, childBlamedThread);
#else
ThreadId childThread = childBlamedThread;
#endif
xpstring dump_path;
#ifndef XP_LINUX
dump_path = gExceptionHandler->dump_path();
#else
dump_path = gExceptionHandler->minidump_descriptor().directory();
#endif
// dump the child
nsCOMPtr<nsIFile> childMinidump;
if (!google_breakpad::ExceptionHandler::WriteMinidumpForChild(
childPid,
childThread,
dump_path,
PairedDumpCallback,
static_cast<void*>(&childMinidump))) {
return false;
}
RenameAdditionalHangMinidump(childMinidump, parentMinidump, name);
return true;
}
bool
UnsetRemoteExceptionHandler()
{
delete gExceptionHandler;
gExceptionHandler = nullptr;
return true;
}
#if defined(MOZ_WIDGET_ANDROID)
void AddLibraryMapping(const char* library_name,
uintptr_t start_address,
size_t mapping_length,
size_t file_offset)
{
if (!gExceptionHandler) {
mapping_info info;
info.name = library_name;
info.start_address = start_address;
info.length = mapping_length;
info.file_offset = file_offset;
library_mappings.push_back(info);
}
else {
u_int8_t guid[sizeof(MDGUID)];
google_breakpad::FileID::ElfFileIdentifierFromMappedFile((void const *)start_address, guid);
gExceptionHandler->AddMappingInfo(library_name,
guid,
start_address,
mapping_length,
file_offset);
}
}
#endif
} // namespace CrashReporter
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